In effect, there are two main balance sheets of interest for households (and non-profit institutions serving households (NPISHs), i.e. charities and voluntary organisations). The first details their net financial wealth and the second their physical wealth, also known as their non-financial wealth. We begin with net financial wealth. This is found by subtracting financial liabilities (debt) from financial assets. The household sector in 2010 had financial liabilities of £1.54 trillion equivalent to 1.6 times its disposable income for the year or 1.1 times the nation’s Gross Domestic Product. Of these liabilities, £1.2 trillion was mortgage debt, i.e. loans secured against property. On the other hand, the sector had financial assets of £4.3 trillion equivalent to 4.4 times its disposable income in 2010 or 3 times GDP. Of these financial assets, the value in pension funds and life assurance was £2.27 trillion.

The net financial wealth of households and NPISHs in 2010 was £2.8 trillion, 2.9 times the sector’s disposable income for the year or 1.9 times GDP. To this we need to add physical wealth of £4.9 trillion, a massive 5 times the sector’s disposable income or 3.3 times the nation’s GDP. The majority of this is residential buildings the value of which were put at £4 billion for 2010. This demonstrates the significance of housing to the UK household sector balance sheet.

If we now add physical wealth to net financial wealth, we find that in 2010 the household and NPISH sector had a net worth of £7.7 trillion. To put this in context, it is equivalent to 7.8 times the disposable income it earned in 2010 and 5.3 times the UK’s Gross Domestic Product. While these are enormous figures it is worth noting that in 2007 the sector’s net worth was £7.4 trillion, equivalent to 8.5 times annual disposable income.

A trawl through the figures clearly shows the impact of the financial crisis on the sector’s net worth. From £7.4 trillion in 2007, net worth fell in 2008 to £6.6 trillion or 7.2 times annual disposable income. However, 2009 and 2010 did see the households’ net worth increase again – including relative to its disposable income. This has been the result of its net financial wealth increasing. Net financial wealth in 2010 was 9.8 per cent higher than in 2007. However, the depressed housing market has continued to adversely impact on the sector’s net worth. Physical wealth in 2010 was 0.7 per cent lower than in 2007.

Of course, while these empirical observations are undoubtedly interesting, the key question for debate is how these patterns affect household behaviour. Of particular importance, is how changes in both the household sector’s total net worth and the components making up the total will translate into changes in consumer spending. Economists are increasingly recognising that in understanding consumer spending patterns we need to gain a deeper understanding of the impact of the balance sheets on consumer spending. It is quite likely that many retailers when forming their plans for the year ahead will be analysing the potential impact of household finances on spending behaviour. Developing strategies to respond to the state of the household balance sheets may be crucial to their success.

In the context of the household balance sheets, explain the difference between the concepts of stocks and flows.

Illustrate with examples your understanding of what is meant by secured and unsecured debt. What factors are likely to affect the growth from one period to another in the stocks of secured and unsecured debt outstanding?

Draw up a list of possible factors that could affect the value of the household sector’s net financial wealth. Now repeat the exercise for non-financial wealth.

Draw up a list of ways in which you think changes to the values of items on the household balance sheets could affect consumer spending. After drawing up this list consider their significance in 2012.

What sort of items would be included in the balance sheets of firms and of government?